Fat and fat-free mass of healthy Swedish children show tracking during early life, but there are differences

Forsum, ElisabetLinköpings universitet,Avdelningen för Kirurgi, Ortopedi och Onkologi,Medicinska fakulteten (author)

Funding Agencies|Medical Research Council of Southeast Sweden
Aim Obesity may start early in life. We investigated relationships between size and body composition variables in infancy and at 4 years of age using valid estimates of body composition. The results were compared to those obtained when body mass index (BMI) was used to estimate body fatness at 4 years. Methods Using air displacement plethysmography, size, fat mass and fat-free mass were studied, between 2007 and 2015, in 253 full-term healthy Swedish children at 1 week, 12 weeks and 4 years of age. Results Positive associations between variables in infancy and at 4 years were found at 1 and 12 weeks for weight, height, BMI, fat-free mass and fat-free mass index (p amp;lt;= 0.002) and for fat mass, per cent body fat and fat mass index (p amp;lt;= 0.04) at 12 weeks. Fat mass gained during infancy correlated positively (p amp;lt;= 0.031) with per cent fat mass, fat mass index and BMI, all at 4 years. In girls, gains in fat-free mass during infancy correlated with BMI (p = 0.0005) at 4 years. Conclusion The results provide information regarding body composition trajectories during early life and demonstrate limitations of BMI as a proxy for body fatness when relating early weight gain to variables, relevant for later obesity risk.

MEDICIN OCH HÄLSOVETENSKAP Hälsovetenskap Näringslära hsv//swe
MEDICAL AND HEALTH SCIENCES Health Sciences Nutrition and Dietetics hsv//eng
Air displacement plethysmography; Body composition; Body mass index; Childhood obesity; Longitudinal development

Eriksson, BrittLinköpings universitet,Avdelningen för Kirurgi, Ortopedi och Onkologi,Medicinska fakulteten(Swepub:liu)brier63 (author)
Flinke Carlsson, EvaLinköpings universitet,Avdelningen för Kirurgi, Ortopedi och Onkologi,Medicinska fakulteten(Swepub:liu)evafl53 (author)
Henriksson, HannaLinköpings universitet,Avdelningen för samhällsmedicin,Medicinska fakulteten(Swepub:liu)hanol24 (author)
Henriksson, PontusKarolinska Institutet,Linköpings universitet,Avdelningen för samhällsmedicin,Medicinska fakulteten,Karolinska Inst, Sweden(Swepub:liu)ponhe11 (author)
Löf, MarieKarolinska Institutet,Linköpings universitet,Avdelningen för samhällsmedicin,Medicinska fakulteten,Karolinska Inst, Sweden(Swepub:liu)marlo59 (author)
Linköpings universitetAvdelningen för Kirurgi, Ortopedi och Onkologi (creator_code:org_t)

By the author/editor: Forsum, Elisabet; Eriksson, Britt; Flinke Carlsson, ...; Henriksson, Hann ...; Henriksson, Pont ...; Löf, Marie

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MEDICAL AND HEALTH SCIENCES: MEDICAL AND HEAL ...; and Health Sciences; and Nutrition and Di ...

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